Suzuki GSX-R 750 (2010) vs Yamaha XMAX 250 (2014-15) vs Yamaha YZF-R 125 (2014) vs KTM RC 390 (2022)
Comparison technical specifications
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| Make: | Suzuki | Yamaha | Yamaha | KTM |
| Model: | GSX-R 750 | XMAX 250 | YZF-R 125 | RC 390 |
| Years: | 2010 | 2014-15 | 2014 | 2022 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, single cylinder, SOHC | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder |
| Capacity: | 749 c / 45.7 cub. in. | 249.7 cc / 15.2 cu-in | 124 cc / 7.6 cu-in | 373 cc / 22.7 cu-in |
| Bore x Stroke: | 70 x 48.7 mm | 69 x 66.8 mm | 52 x 58.6 mm | 89 x 60 mm |
| Compression Ratio: | 12.5:1 | 11.2:1 | 11.2:1 | |
| Cooling System: | Liquid. High capacity large trapezoidal-shaped radiator which includes compact cooling fan assembly designed for improved air flow. | Liquid cooled | Liquid cooled | Liquid Cooled |
| Lubrication: | Wet sump | Wet sump | Wet sump | Wet sump |
| Induction: | New 32 bit ECM features 1024 kilobytes of ROM for maximum engine performance working in conjunction with the new S-DMS engine management system | Fuel Injection | Fuel Injection | Bosch Injection |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 110.3 kW / 148 hp @ 12800 rpm | 20.1 hp / 14.7 kW) @ 7500 rpm | 11 kW / 15 hp @ 9000 rpm | 32 kW / 43 hp @ 9500 rpm |
| Max Torque: | 86.3 Nm / 8.8 kgf-m / 64 ft-lb @ 11200 rpm | 21 Nm / 15.5 lb-ft @ 6000 rpm | 12.4 Nm / 1.25 kg-m @ 8000 rpm | 37 Nm / 27.2 lb-ft |
| Transmission: | 6 Speed, constant mesh | Automatic | 6 Speed | 6 Speed |
| Final Drive: | Chain, RK525ROZ5Y, 116 links | Belt | Chain | 520 X-Ring |
| Front Suspension: | Showa inverted 41 mm cartridge front forks fully adjustable for high and low speed compression, spring preload, and rebound damping | Telescopic fork, 110mm wheel travel. | Upside-down telescopic fork, Ø 41 mm | USD WP APEX 43 |
| Rear Suspension: | Showa 41mm aluminum alloy rear shock with a 16mm rod diameter are fully adjustable for high and low speed compression, spring preload and rebound damping | Unit swing, 95mm wheel travel. | Linked monoshock with spring preload adjustment | WP APEX - Monoshock |
| Front Brakes: | 2 x 310 mm Discs, radial-mount opposed-four-piston Tokico 4 piston calipers | Single 267mm disc | Single 292mm disc | Single 320 mm disc 4 piston radial fixed calliper |
| Rear Brakes: | Single 220 mm disc, Tokico 2 piston caliper | Single 240mm disc | Single 230mm disc | Single 230 mm disc 1 piston floating calliper |
| Front Tyre: | 120/70 ZR17 | 120/70-M15 | 110/80 -17 | 110/70 R17 |
| Rear Tyre: | 180/55 ZR17 | 140/70-M14 | 130/70 -17 | 150/60 R17 |
| Wheelbase: | 1390 mm / 54.7 in. | 1545 mm / 60.8 in | 1355 mm / 53.3 inc | |
| Seat Height: | 810 mm / 31.8 in. | 792 mm / 31.2 in | 825 mm / 32.4 in | 824 mm / 32.4 in |
| Fuel Capacity: | 17 Litres / 4.5 US gal / 3.7 Imp gal | 11.8 Liters / 3.3 gal | 11.5 Litres / 3.0 gal | 13.7 Liters / 3.6 US gal |